Vol. 11, Issue 1 (2022)

Author(s):
AA Walekar, SS More, MC Kasture, SC Jadhav, Bhagyashree Hole, VA Rajemahadik and TJ Bedase

Abstract:
The pot culture experiment was carried out to examine the impact of different nutrient and beneficial sources application on yield, nutrient content and uptake of rice. Total 15 treatment combination were evaluated and laid out in factorial randomized block design with 3 replications. Recommended dose of fertilizer (100:50:50 N:P₂O₅:K₂O kg ha^-1) through chemical fertilizers, 100 kg N through vermicompost and application of Konkan Anapurna Briquette (34:14:6 N:P₂O₅:K₂O) represented the first factor while second factor consisted control, silica @ 150 kg ha^-1, azolla @ 1 ton ha^-1, rice husk biochar @ 5 ton ha^-1 and potassium sulphate @ 50 kg ha^-1 application. The results regarding yield nutrient content and uptake of rice denoted that, application of 100:50:50 N:P₂O₅:K₂O kg ha^-1 through chemical fertilizers and silica @ 150 kg ha^-1 significantly improved grain yield while rice husk biochar @ 5 ton ha^-1 straw yield. The phosphorous, potassium and silicon content was significantly influenced by application of 100:50:50 N:P₂O₅:K₂O kg ha^-1 through chemical fertilizers in rice grain, while by Konkan Annapurna Briquette in rice straw. The phosphorous and potassium content in grain increased by Azolla application, and nitrogen content in straw and silicon content in straw by silica application. The 100:50:50 N:P₂O₅:K₂O kg ha^-1 through chemical fertilizers application significantly improved total uptake of phosphorous, potassium and silicon; however total nitrogen uptake by briquette application. Azolla application improved total uptake of phosphorous and potassium; while total nitrogen and silicon uptake by silica and biochar application respectively.